# Define a Circle class with a single field named radius. The value for radius is passed
# when an instance of Circle is created. In this class, define the following methods:
# (1) get_radius to return the radius of the circle
# (2) perimeter to return the perimeter of the circle, perimeter = 2 * Pi * radius (you can set Pi = 3.142)
# (3) area to return the area of a circle, area = Pi * radius * radius








# Once completed, create two instances of Circle with different radius, eg 4.5, 10.8
# and print the radius, perimeter, and area for both instances




# Did you create a setter for radius? Can the radius be a negative number?
# If you have not, create a setter for radius with validation.
